1. To run real fast, like when da cops chasin you or somethin
2. To get them digits

(for def. 1.) This dude was buyin drugs,knowin he broke, he took the drugs and said he'll pay the dude da next day. So the next day, (dude still broke) and he saw da man he owed money to. The dude emade some sorry excuse about why he couldn't pay the drug dealer the money. So the drug dealer looked at him, and pulled out an AK47. Da dude took one look at da gun and booked!!!!!!!!
(def. 2.) "I booked like four niggas at ShoQuanda's party last night"

The Urban Dictionary Mug

Did you know there HAVE been books printed since the fifties and the new ones are cool? They have them so anyone can understand them. Books can be about video games, sex, drugs, sports, people, pretty much everything. They come with cuss words, funny characters and you might understand some more of you those weird things...that's right. Words.

"Doood, books are lame and my perception of them doesn't exceed that of a cingle-celled organism."
"Doood. You used like those big-wordy thingies."
"I know! My predisposition about books was totally misguided, baseless, crude and illiterate!"
"Whoa."